US PATENT SUBCLASS 202 / 217
.~.~.~ Retort

Current as of: June, 1999
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202 /   HD   DISTILLATION: APPARATUS

81  DF  APPARATUS {4}
*  DD  .~ Types {3}
*  DD  .~.~ Autothermic {5}
217.~.~.~ Retort {6}
218  DF  .~.~.~.~> Rotary and/or tilting
219  DF  .~.~.~.~> Molten bath
220  DF  .~.~.~.~> Flued
221  DF  .~.~.~.~> Vertical
222  DF  .~.~.~.~> Structural features {3}
226  DF  .~.~.~.~> Residue treatment

DEFINITION

Classification: 202/217

The structure of the closed vessel constituting the retort. It is heated externally, but may also have auxiliary means for indirect heating.

SEE OR SEARCH CLASS

110, Furnaces,

242, for a refuse incinerator in the form of a closed retort.

122, Liquid Heaters and Vaporizers, appropriate subclasses, for a closed liquid container apparatus in which heat is applied directly or indirectly to the walls.

266, Metallurgical Apparatus,

153, for furnaces having retort condenser units and subclasses 171+ for furnaces having retorts.